Sorting by locale settings on Windows?

Hi,

   I have PG 7.3.1 on W2K. I have DB with Latin2 encoding. All works
fine, but when I try ORDER BY clausule on text (varchar) columns, it is
sorted like with 'C' locale.
   I tried to change LC_XXX in postgresql.conf, but any other value than
'C' is rejected. On Linux it works fine with cs_CZ.
   Does anyone have some idea how to do it?

                        Yours,

                            Jirka Novak